USPS Sack Label

USPS sack label is one of the most popular linear barcode symbology that is mainly used in United States Postal Services for labeling post sacks. USPC barcode contains "ZIP code" of the receiver and "Content Identifier Number".

The value to encode length of USPS sack label is fixed to 8 digits and it must have the following structure:

5 digits for ZIP code

3 digits for Content Identifier Number (CIN)

The "Content Identifier Number" [CIN] indicates the following information:

USPS sack label barcode symbology is most widely used linear barcode that represent the following information: the 5-digit ZIP Code destination of the sack and the 3-digit content identifier number (CIN) that is applicable to the content of the sack.